<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title>用户登录</title>
		<script type="text/javascript" src="js/jquery.min.js" ></script>
		<script type="text/javascript" src="js/bootstrap.min.js" ></script>
		<link rel="stylesheet" href="css/bootstrap.min.css" />
		<style>
			/*
			 *在此处放CSS样式代码 ,下面的这个是给loginDiv提供样式
			 * 整个屏幕的百分之30
			 */
			.loginDiv{
				width:30%;
				height:450px;
				background-color: #F3F3F3;
				margin: 0 auto; /*设置居中格式*/
				margin-top: 30px; /*设置div距离顶部*/
				padding-top: 50px;
				
			}
		</style>
	</head>
	<body>
		<div class="loginDiv">   
			<img class="center-block img-responsive" src="img/tyust.png" >
			<img class="center-block img-responsive" src="img/sys.png" >
			<input placeholder="用户名" type="text" class="form-control"><br> 
			<input placeholder="密码" type="password" class="form-control"><br>
			<button class="btn btn-primary btn-block">登录</button><br>
			<img width="200px" height="20px" class="center-block img-responsive" src="img/ychs-nobg.png"  />
		</div>
	</body>
</html>
